Stored XSS exists in the Appointment Booking Calendar plugin before 1.3.35 for WordPress. In the cpabc_appointments.php file, the Calendar Name input could allow attackers to inject arbitrary JavaScript or HTML.

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 1.6.8.5. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the accent_color and background parameter in all versions up to, and including, 1.6.8.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in NotFound Doctor Appointment Booking allows PHP Local File Inclusion. This issue affects Doctor Appointment Booking: from n/a through 1.0.0.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in NotFound Doctor Appointment Booking allows SQL Injection. This issue affects Doctor Appointment Booking: from n/a through 1.0.0.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in accreteinfosolution Appointment Buddy Widget allows Reflected XSS. This issue affects Appointment Buddy Widget: from n/a through 1.2.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound Swift Calendar Online Appointment Scheduling allows Reflected XSS. This issue affects Swift Calendar Online Appointment Scheduling: from n/a through 1.3.3.

The SuperSaaS – online appointment scheduling plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘after’ parameter in all versions up to, and including, 2.1.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is limited to Chromium-based browsers (e.g. Chrome, Edge, Brave).

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound Instant Appointment allows Reflected XSS. This issue affects Instant Appointment: from n/a through 1.2.

The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin before 1.1.23 export settings functionality exports data to a public folder, with an easily guessable file name, allowing unauthenticated attackers to access the exported files (if they exist).